689428112 has 10 divisors (see below), whose sum is σ = 1335766998. Its totient is φ = 344714048.

The previous prime is 689428111. The next prime is 689428139. The reversal of 689428112 is 211824986.

It can be written as a sum of positive squares in only one way, i.e., 549621136 + 139806976 = 23444^2 + 11824^2 .

It is a super-2 number, since 2×689428112² = 950622243231769088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689428112.

It is not an unprimeable number, because it can be changed into a prime (689428111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21544613 + ... + 21544644.

Almost surely, 2^689428112 is an apocalyptic number.

It is an amenable number.

689428112 is a deficient number, since it is larger than the sum of its proper divisors (646338886).

689428112 is a wasteful number, since it uses less digits than its factorization.

689428112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43089265 (or 43089259 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 689428112 is about 26256.9631145721. The cubic root of 689428112 is about 883.4113933469.

The spelling of 689428112 in words is "six hundred eighty-nine million, four hundred twenty-eight thousand, one hundred twelve".